HiTech

Been a long time coming with numerous different designs and options having been investigated and finally had enough of load shedding and ‘tripping’ power stations (not to mention the loss to fires). First things first, thanks to this forum and those behind the scenes for some extraordinary information, guidance and confirmation on many unknown aspects, following which I thought it only fit to share the outcome on the showcase. Planned to accommodate a 3-Phase environment, with average daily use of up to 55.67kWh, with numerous obstacles, such as 3DB’s in the house, the main enclosure located in the scullery and wanting/having to install the solar solution in the garage (based on size). This required some planning on getting the Grid to the garage and the Load to the scullery. 3 Geysers in the house, already managed by Geyserwise Max units, thus could add their own solar plants, however opted to just use the timers and temp control for now and try and centralise everything to one generation source and avoid having to manage multiple plants. DIY install, thus will progress as time permits and as the accessories are gathered, down to the ferrules. Solution: 1 x 12kW SunSynk, 4 x Hubble AM2, Hubble Cloudlink, 18 x JA460 PV – 3 strings(6), 3-string DC Combiner, JM Keto-1 240A isolator.

Interesting stats - @Mier could you confirm which Inverter or BMS system is being used?

Reading through this thread, there seems to be no disadvantage to installing Earth spike/s, yet many reasons to rather have them, especially the insurance backing, the fact this could rather save thousands and ensure safety in the event of islanding/off-grid operation. Based on this (reaching out to the installers and DIY's that do implement Earth spikes), Would it be recommended to have seperate earth groundings per string or could the earth be daisy chained across strings and to a single spike. Bare copper wire option is probably the preferred option, based on its composition. Does one simply strap it to the mounting rail and them strap the strings rails together, to cover the entire string - or rely on the panels to be the conductor between rails. Obviously these earth lines should remain outside of the roof and make their way to ground externally, based on the fact should they attempt to carry a lighting strike surge to the ground they are likely to be the equivalent to glowing rods. Would one recommend using the same or seperate earth spike/s for panels and equipment (Inverter/DB's/Combiners/Etc.), or separating these?

Can anyone confirm whether the 'new' Wi-Fi Stick shipping with the SunSynk 12kW is equivalent to the SunSynk Data Logger? (If so, why is it still named Wifi Stick and not Data Logger) The QR code on the WiFi Stick does take one to the SS Logger/Remote monitoring site. @Powerforum Store - If anyone may be able to confirm this, was hoping it would be the you.

🤩 Looks like a beast - can only imagine the specifications and weight associated to this inverter. Really glad to see SunSynk extending the options for single phase capacity.

@Mier That was my concern, many of the issues were being reported on single or dual battery installations, which should not be as easily affected by cable formats. Glad to see Hubble are addressing your issue so efficiently. @system32 Your cable config for the batteries is what I had hoped. Yet rule of thumb should be same length, same diameter throughout (unless Posts - 2 option in diagrams), hence ensuring one avoids the weakest spot, which Mier is alluding to. (All cable should be larger than min spec) Looking at your charge/discharge specs (133/150A), the calculations point to a 35mm sqr (2AWG), which may be impacted by your standard Hubble cables, which I received as 25mm. I have the same issue, looking at 10-11KW (208 - 229A), which equates to 50mm sqr on 3 meters, thus having to replace inter-battery connections with 50mm and primarily why I asked what config you had opted for. Thanks for sharing. Bus-bar is the answer, but questionable for a neat installation. 35mm up to 192A 50mm up to 240A (3 meter length)

Very interesting thread you have going here @system32. One area I have not seen discussed is the method of connecting the batteries. I'm especially interested in the 4 x AM2 type configurations, as looking at the issues around parallel connectivity and the fact incorrect connections could/would impact individual batteries. Example is looking at Victron's (Their diagrams - hence the mention) write up on battery connectivity, where standard parallel connections will impact the first and last battery. Hence the need for diagonal or other methods to be used. You have a great configuration going here, could you confirm the connection method and cable type (mm2) used for your 4 x AM2 connection.